From de4e1795cc2cab26711926836bebaaa00ac45155 Mon Sep 17 00:00:00 2001
From: win2kgamer <47463859+win2kgamer@users.noreply.github.com>
Date: Sun, 1 Feb 2026 21:50:31 -0600
Subject: [PATCH] CS423x: Make bits 2-0 of control register C0 writable, fixes
 Win3.1 v2.02 driver invalid codec error and Win9x v2.86 driver code 10

---
 src/sound/snd_cs423x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sound/snd_cs423x.c b/src/sound/snd_cs423x.c
index b9004454e..264171b1e 100644
--- a/src/sound/snd_cs423x.c
+++ b/src/sound/snd_cs423x.c
@@ -290,7 +290,7 @@ cs423x_write(uint16_t addr, uint8_t val, void *priv)
                         ad1848_init(&dev->ad1848, dev->ad1848_type);
                         ad1848_set_cd_audio_channel(&dev->ad1848, AD1848_AUX2);
                     }
-                    val = 0x00;
+                    val &= 0x07;
                     break;
 
                 case 1:         /* Version / Chip ID */